CN108511829A - A kind of lithium battery - Google Patents
A kind of lithium battery Download PDFInfo
- Publication number
- CN108511829A CN108511829A CN201710108803.2A CN201710108803A CN108511829A CN 108511829 A CN108511829 A CN 108511829A CN 201710108803 A CN201710108803 A CN 201710108803A CN 108511829 A CN108511829 A CN 108511829A
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- lithium battery
- battery
- negative plate
- positive plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims description 9
- 239000011247 coating layer Substances 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052493 LiFePO4 Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 239000007770 graphite material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000003487 electrochemical reaction Methods 0.000 abstract description 2
- 238000009530 blood pressure measurement Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
A kind of lithium battery, including battery core and shell, battery core are arranged inside the shell, and battery core includes positive plate, negative plate and diaphragm, it is characterised in that is provided with pressure sensor between the positive plate or/and negative plate and diaphragm.The pressure sensor for monitoring pressure change is varied, however the sensor for cell internal pressure detection needs more small size, when transmitting high fidelity pressure measurement, pressure sensor is fitted closely with battery interior pole, has no effect on the electrochemical reaction process in battery.
Description
(1) technical field
The present invention relates to a kind of lithium battery, more particularly to a kind of lithium battery of built in pressure sensor.
(2) background technology
Lithium battery have many advantages, such as voltage it is high, it is higher than energy, recycle often, storage time it is long, not only portable
(such as mobile phone, DV and laptop computer) is used widely on formula electronic equipment, and is widely used in electricity
In terms of the large and medium-sized electrical equipment such as electrical automobile, electric bicycle and electric tool, therefore to the performance requirement of lithium ion battery
It is higher and higher.The internal structure of lithium battery is made of positive and negative electrode piece and diaphragm, and battery will produce largely in use
Heat, influence the cycle life and safety of its battery, be especially affected to high capacity cell, inside battery generates big
Entire cell expansion can be caused to generate deformation after calorimetric amount, the side wall of battery will be by deformation pressure.It presses in the prior art
Force snesor can directly measure the pressure size that tested point is subject to, in the battery pressure value energy indirect reaction inside battery heat
Production.Sensor is set between battery core and shell to monitor battery side wall because the variation of temperature deforms upon the pressure being subject to
Power, however the variation truth of this and the pyrotoxin of battery core can have some lag.Therefore, a kind of novel built-in biography is studied
The lithium battery of sensor has been to be badly in need of.
(3) invention content
The present invention provides a kind of lithium battery that can realize cell internal pressure monitoring in view of the above shortcomings of the prior art.
Used technical solution is the present invention in order to solve the above problem：A kind of lithium battery, including battery core and shell, battery core
Inside the shell, battery core includes positive plate, negative plate and diaphragm for setting, it is characterised in that the positive plate or negative plate and diaphragm it
Between be provided with pressure sensor.The pressure sensor for monitoring pressure change is varied, however is detected for cell internal pressure
Sensor need more small size, when transmitting high fidelity pressure measuring value, pressure sensor and battery interior pole are tight
Closely connected conjunction has no effect on the electrochemical reaction process in battery.
In addition, the present invention also has the following advantages that and advantageous effect：
1, the deformation inside battery core can be monitored in real time, reflects the operational heat expansion status of battery in time, and promoting battery makes
Safety and the counter-measure for making battery thermal runaway event in time.
2. realizing the safety management to lithium battery group, battery life is increased.Provide Security Strategies and equilibrium
Management makes battery keep preferable consistency, can effectively improve the service life of battery.
The present invention is characterized in that the pressure sensor is arranged between positive plate and diaphragm.In this way, can directly examine
Measure the pressure value that positive plate is subject to when inside battery is thermally expanded because temperature is excessively high.
The present invention is further characterized in that the pressure sensor is arranged between negative plate and diaphragm.In this way, can be direct
Detect the pressure value that negative plate is subject to when inside battery is thermally expanded because temperature is excessively high.
The present invention is further characterized in that the connection outside line end of pressure sensor is provided with connector.In this way, convenient and battery
Interior each component connection, when the pressure value detected is more than threshold value, external analysis module will take battery charge and discharge process
Measure.
The present invention is further characterized in that pressure sensor is fixed on positive plate or negative plate.In this way, pressure will not be allowed to pass
Sensor is subjected to displacement, and can effectively control the pressure of required measurement point.
The present invention is further characterized in that the both ends of the pressure sensor perforation positive plate or negative plate.In this way, pressure passes
Sensor can touch pole piece edge to central area, so that it may to detect the average pressure of entire pole piece.
The present invention is further characterized in that the pressure sensor is arranged in positive plate or negative plate central area.Pole piece center
Region is usually the position that battery most easily generates heat, and therefore, pressure sensor is arranged in pole piece central area, can be by battery
Pressure change passes to control centre, when pressure reaches threshold value, by system to battery using corresponding control.
The present invention is further characterized in that the material of positive plate coating layer is LiFePO4, cobalt acid lithium or ternary material.
The present invention is further characterized in that the material of negative plate coating layer is graphite material.
(4) it illustrates
Fig. 1 is the schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of pressure sensor.
Fig. 3 is position view of the pressure sensor in lithium battery.
Fig. 4 is the schematic diagram of the embodiment of the present invention 2.
Fig. 5 is the vertical view of Fig. 4.
Fig. 6 is the schematic diagram of the embodiment of the present invention 3.
In figure, 1, battery core, 2, shell, 3, positive plate, 4, negative plate, 5, diaphragm, 6, pressure sensor, 7, pressure sensor
Connecting lead wire, 8, pressure sensor connector, 9, bidirectional interface, 10, built-in end interface, 11, external end interface.
(5) specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, 3, a kind of lithium battery, including battery core 1 and shell 2, battery core 1 are arranged in shell 2, and battery core 1 is wrapped
Positive plate 3, negative plate 4 and diaphragm 5 are included, diaphragm 5 is separated positive plate 3 and the insulation of negative plate 4 with Z-shaped winding method, positive and negative
Lug is provided on pole piece, shell 2 includes shell top and shell, and pole and interface holes are provided at the top of shell.Battery core 1 as described in Figure 1
Pressure sensor 6 is provided between positive plate 3 and diaphragm 5,6 one end of pressure sensor, which extends to outside battery, can access external mould
Block.
The present invention be further characterized in that as shown in Figure 4,5, battery core 1 include positive plate 3, negative plate 4 and diaphragm 5, diaphragm 5 with
Z-shaped winding method separates positive plate 3 and the insulation of negative plate 4, is provided with lug on positive/negative plate, the negative plate 4 with every
Pressure sensor 6 is provided between film 5,6 one end of pressure sensor, which extends to, can access external module outside battery.
As shown in figure 3, the present invention is further characterized in that 7 end of connecting lead wire of pressure sensor 6 is provided with connector 8.
The present invention is further characterized in that the shell 2 includes shell top and shell, and the closure part on shell top is provided with closed
Bidirectional interface 9, built-in end interface 10 is used to connect the connector 8 of pressure sensor 6, and external end interface 11 is used for and detection and analysis
Equipment connects.
The present invention is further characterized in that pressure sensor 6 is directly placed on positive plate 3 or negative plate 4.
The present invention is further characterized in that pressure sensor 6 is fixed on positive plate 3 or negative plate 4.
The present invention is further characterized in that the pressure sensor 6 penetrates through the both ends of positive plate 3 or negative plate 4.
The present invention is further characterized in that the pressure sensor 6 is arranged in 4 central area of positive plate 3 or negative plate.
The present invention is further characterized in that the material of positive plate coating layer is LiFePO4, cobalt acid lithium or ternary material.
The present invention is further characterized in that the material of negative plate coating layer is graphite material.
Claims (9)
1. a kind of lithium battery, including battery core (1) and shell (2), in shell (2), battery core (1) includes anode for battery core (1) setting
Piece (3), negative plate (4) and diaphragm (5), it is characterised in that set between the positive plate (3) or/and negative plate (4) and diaphragm (5)
It is equipped with pressure sensor (6).
2. lithium battery according to claim 1, it is characterised in that connecting lead wire (7) end of pressure sensor (6) is arranged
There is connector (8).
3. lithium battery according to claim 2, it is characterised in that the closure part of the shell (2) is provided with enclosed
Bidirectional interface (9), built-in end interface (10) are used to connect the connectors (8) of pressure sensor (6), external end interface (11) be used for
Test and analyze equipment connection.
4. the lithium battery according to any claim in claims 1 to 3, it is characterised in that pressure sensor (6) is direct
It is placed on positive plate (3) or/and negative plate (4).
5. the lithium battery according to any claim in claims 1 to 3, it is characterised in that pressure sensor (6) is fixed
On positive plate (3) or/and negative plate (4).
6. the lithium battery according to any claim in claims 1 to 3, it is characterised in that the pressure sensor (6)
Penetrate through the both ends of positive plate (3) or/and negative plate (4).
7. the lithium battery according to any claim in claims 1 to 3, it is characterised in that the pressure sensor (6)
It is arranged in positive plate (3) or/and negative plate (4) central area.
8. the lithium battery according to any claim in claims 1 to 3, it is characterised in that positive plate (3) coating layer
Material is LiFePO4, cobalt acid lithium or ternary material.
9. the lithium battery according to any claim in claims 1 to 3, it is characterised in that negative plate (4) coating layer
Material is graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108803.2A CN108511829A (en) | 2017-02-27 | 2017-02-27 | A kind of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108803.2A CN108511829A (en) | 2017-02-27 | 2017-02-27 | A kind of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108511829A true CN108511829A (en) | 2018-09-07 |
Family
ID=63373216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710108803.2A Pending CN108511829A (en) | 2017-02-27 | 2017-02-27 | A kind of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108511829A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818091A (en) * | 2019-01-25 | 2019-05-28 | 深圳瑞隆新能源科技有限公司 | A kind of lithium ion battery |
| CN109830769A (en) * | 2019-01-25 | 2019-05-31 | 深圳瑞隆新能源科技有限公司 | A kind of polymer Li-ion battery |
| CN111554992A (en) * | 2020-06-02 | 2020-08-18 | 东莞新能德科技有限公司 | Battery cell, battery and electronic equipment |
| CN111710926A (en) * | 2020-06-24 | 2020-09-25 | 电子科技大学 | Information electrochemical energy storage device and management control method and system thereof |
| CN112034358A (en) * | 2020-08-04 | 2020-12-04 | 上汽大众汽车有限公司 | Lithium battery thermal runaway detection system and method |
| CN113258178A (en) * | 2020-02-12 | 2021-08-13 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| WO2021159994A1 (en) * | 2020-02-12 | 2021-08-19 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202454677U (en) * | 2012-02-25 | 2012-09-26 | 佛山市顺德区精锐电池科技有限公司 | High-multiplying-factor discharge power lithium battery core and lithium battery |
| CN105762401A (en) * | 2016-01-07 | 2016-07-13 | 小牛动力（武汉）新能源技术有限公司 | Lithium ion power battery and utilization method thereof |
| CN106099132A (en) * | 2016-08-30 | 2016-11-09 | 惠州市惠德瑞锂电科技股份有限公司 | A kind of lithium battery core body and the lithium primary battery of gained |
-
2017
- 2017-02-27 CN CN201710108803.2A patent/CN108511829A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202454677U (en) * | 2012-02-25 | 2012-09-26 | 佛山市顺德区精锐电池科技有限公司 | High-multiplying-factor discharge power lithium battery core and lithium battery |
| CN105762401A (en) * | 2016-01-07 | 2016-07-13 | 小牛动力（武汉）新能源技术有限公司 | Lithium ion power battery and utilization method thereof |
| CN106099132A (en) * | 2016-08-30 | 2016-11-09 | 惠州市惠德瑞锂电科技股份有限公司 | A kind of lithium battery core body and the lithium primary battery of gained |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818091B (en) * | 2019-01-25 | 2021-06-08 | 三亚佳瑞新能源科技有限责任公司 | Lithium ion battery |
| CN109830769A (en) * | 2019-01-25 | 2019-05-31 | 深圳瑞隆新能源科技有限公司 | A kind of polymer Li-ion battery |
| CN109818091A (en) * | 2019-01-25 | 2019-05-28 | 深圳瑞隆新能源科技有限公司 | A kind of lithium ion battery |
| CN113328159A (en) * | 2020-02-12 | 2021-08-31 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN113258178A (en) * | 2020-02-12 | 2021-08-13 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| WO2021159996A1 (en) * | 2020-02-12 | 2021-08-19 | 比亚迪股份有限公司 | Battery, battery module, battery pack, and electric vehicle |
| WO2021159994A1 (en) * | 2020-02-12 | 2021-08-19 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN113328159B (en) * | 2020-02-12 | 2024-04-16 | 比亚迪股份有限公司 | Battery, battery module, battery package and electric motor car |
| CN111554992A (en) * | 2020-06-02 | 2020-08-18 | 东莞新能德科技有限公司 | Battery cell, battery and electronic equipment |
| CN111554992B (en) * | 2020-06-02 | 2023-04-25 | 东莞新能德科技有限公司 | Battery cell, battery and electronic equipment |
| CN111710926A (en) * | 2020-06-24 | 2020-09-25 | 电子科技大学 | Information electrochemical energy storage device and management control method and system thereof |
| CN112034358A (en) * | 2020-08-04 | 2020-12-04 | 上汽大众汽车有限公司 | Lithium battery thermal runaway detection system and method |
| CN112034358B (en) * | 2020-08-04 | 2023-04-07 | 上汽大众汽车有限公司 | Lithium battery thermal runaway detection system and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210121 Address after: Room 702, superstar entrepreneurial base, No.8 Lujing Road, Changsha high tech Development Zone, Changsha City, Hunan Province, 410205 Applicant after: Changsha Juneng new energy Co.,Ltd. Address before: Room 706, superstar entrepreneurial base, No.8 Lujing Road, high tech Development Zone, Changsha City, Hunan Province, 410205 Applicant before: HUNAN MIAOSHENG AUTOMOBILE POWER Co.,Ltd. |